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use std::env::args;
use std::fs::{create_dir_all, File};
use std::io::{BufRead, BufReader, BufWriter, Write};
use std::path::Path;
use std::process::{exit, Command};
fn get_themes<P: AsRef<Path>>(style_path: P) -> Vec<String> {
let mut ret = Vec::with_capacity(10);
const BEGIN_THEME_MARKER: &'static str = "/* Begin theme: ";
const END_THEME_MARKER: &'static str = "/* End theme: ";
let timestamp =
std::time::SystemTime::UNIX_EPOCH.elapsed().expect("time is after UNIX epoch").as_millis();
let mut in_theme = None;
create_dir_all("build/tmp").expect("failed to create temporary test directory");
for line in BufReader::new(File::open(style_path).expect("read rustdoc.css failed")).lines() {
let line = line.expect("read line from rustdoc.css failed");
let line = line.trim();
if line.starts_with(BEGIN_THEME_MARKER) {
let theme_name = &line[BEGIN_THEME_MARKER.len()..].trim().trim_end_matches("*/").trim();
let filename = format!("build/tmp/rustdoc.bootstrap.{timestamp}.{theme_name}.css");
in_theme = Some(BufWriter::new(
File::create(&filename).expect("failed to create temporary test css file"),
));
ret.push(filename);
}
if let Some(in_theme) = in_theme.as_mut() {
in_theme.write_all(line.as_bytes()).expect("write to temporary test css file");
in_theme.write_all(b"\n").expect("write to temporary test css file");
}
if line.starts_with(END_THEME_MARKER) {
in_theme = None;
}
}
ret
}
fn main() {
let argv: Vec<String> = args().collect();
if argv.len() < 3 {
eprintln!("Needs rustdoc binary path");
exit(1);
}
let rustdoc_bin = &argv[1];
let style_path = &argv[2];
let themes = get_themes(&style_path);
if themes.is_empty() {
eprintln!("No themes found in \"{}\"...", style_path);
exit(1);
}
let arg_name = "--check-theme".to_owned();
let status = Command::new(rustdoc_bin)
.args(&themes.iter().flat_map(|t| vec![&arg_name, t].into_iter()).collect::<Vec<_>>())
.status()
.expect("failed to execute child");
if !status.success() {
exit(1);
}
}
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